class verb_agreement 
{
    + vagreement;
    father(V).bot.number = node(V).top.number;
    father(V).bot.gender = node(V).top.gender;
    father(V).bot.tense = node(V).top.tense;
    father(V).bot.mode = node(V).top.mode;
    father(V).bot.person = node(V).top.person;
%%    father(V).bot.diathesis = node(V).top.diathesis;
}